Meanwhile I tried several ATI app's from different projects with driver 11.11(primegrid, Moo)
None of them has a acceptable CPU usage, min 60 - max 100% CPU usage.
Nothing changed since years, ATI hardware is good, but driver support is catastrophic.
11.11 driver is not really usable for GPU calculations, it forces 100% CPU usage.
heinz
modify: ATI app of Collatz crashed also
Stderr output
<core_client_version>6.10.60</core_client_version>
<![CDATA[
<message>
- exit code -1073741819 (0xc0000005)
</message>
<stderr_txt>
Running Collatz Conjecture (3x+1) ATI GPU application version 2.09 by Gipsel (Win32, CAL 1.4)
instructed by BOINC client to use device 0
Reading input file ... done.
Checking 824633720832 numbers starting with 2372965778048095594856
CPU: Intel(R) Pentium(R) 4 CPU 2.66GHz (1 cores/threads) 2.67271 GHz (0ms)
CAL Runtime: 1.4.1607
Found 1 CAL device
Device 0: ATI Radeon HD4600 (RV730) 1024 MB local RAM (remote 64 MB cached + 128 MB uncached)
GPU core clock: 750 MHz, memory clock: 800 MHz
320 shader units organized in 8 SIMDs with 8 VLIW units (5-issue), wavefront size 32 threads
not supporting double precision
Initializing lookup table (16384 kB) ... done
Starting WU on GPU 0
Copy lookup table to GPU memory (16384 kB)
Initialize step array on GPU (256 MB)
predicted runtime per iteration is 167 ms (33.3333 ms are allowed), dividing each iteration in 6 parts
borders of the domains at 0 688 1368 2048 2736 3416 4096
No checkpoint data found.
Unhandled Exception Detected...
- Unhandled Exception Record -
Reason: Access Violation (0xc0000005) at address 0x00BB7E66 read attempt to address 0x0000014C